A melting apparatus for synthesizing nodular cast iron and a method for using the same

Abstract

The application belongs to the technical field of nodular cast iron smelting, and particularly relates to a nodular cast iron smelting equipment and a use method thereof, which comprises a base, a heating table, a support frame, a cover package type spheroidizing mechanism and a heat sensing type slag cleaning mechanism. The heating table is arranged on the upper wall of the base. The support frame is symmetrically arranged on the upper wall of both ends of the base. The cover package type spheroidizing mechanism is arranged on the support frame. The heat sensing type slag cleaning mechanism is arranged on the base. The cover package type spheroidizing mechanism comprises a sealing package assembly and a heat preservation assembly. The sealing package assembly is arranged on the end of the support frame away from the base. The heat preservation assembly is arranged on the inner wall of the heating table. The heat sensing type slag cleaning mechanism comprises a heat measuring assembly, a ring guide assembly, an energy storage assembly and a slag vibrating assembly. The nodular cast iron smelting equipment and the use method thereof can timely remove the molten slag adhered to the inner wall of the cover plate and recycle the heat generated during the spheroidizing process of the molten iron.

Description

Technical Field

[0001] This invention belongs to the field of ductile iron smelting technology, specifically referring to a smelting equipment for synthesizing ductile iron and its usage method. Background Technology

[0002] Ductile iron undergoes spheroidizing and inoculation processes, resulting in graphite existing in a spherical morphology. This structure significantly enhances the mechanical properties of the cast iron, making its overall performance approach that of steel. Thanks to these superior properties, ductile iron has been successfully used to manufacture parts that withstand complex stresses and require high strength, toughness, and wear resistance.

[0003] The existing smelting equipment for synthetic ductile iron has the following problems:

[0004] Existing synthetic ductile iron smelting equipment, when using the cover plate method, lacks the ability to promptly remove slag adhering to the inner wall of the cover plate. This results in an increasingly thick slag layer on the inner wall of the cover plate, reducing the effective volume inside the ladle. Slag may even fall into the molten iron in subsequent processing, forming inclusion defects. Furthermore, traditional synthetic ductile iron smelting equipment also lacks the ability to recover and utilize the heat generated by the molten iron during the spheroidization process, thereby reducing the efficiency of the smelting equipment.

[0005] Therefore, existing equipment is insufficient to meet the production needs of smelting synthetic ductile iron. Summary of the Invention

[0006] In view of the above situation and to overcome the shortcomings of the prior art, this solution provides a smelting equipment and its method for smelting synthetic ductile iron that can promptly remove slag adhering to the inner wall of the cover plate and recover and utilize the heat generated by the molten iron during the spheroidization process.

[0007] The technical solution adopted in this plan is as follows: This plan proposes a smelting equipment for synthesizing ductile iron, including a base, a heating platform, a support frame, a spheroidizing mechanism with a cover, and a slag-removing mechanism with a heat-sensitive nature. The heating platform is located on the upper wall of the base, the support frame is symmetrically located on the upper walls at both ends of the base, the spheroidizing mechanism with a cover is located on the support frame, and the slag-removing mechanism with a heat-sensitive nature is located on the base. The spheroidizing mechanism with a cover includes a sealing component and a heat-insulating component. The sealing component is located at the end of the support frame away from the base, and the heat-insulating component is located on the inner wall of the heating platform. The slag-removing mechanism with a heat-measuring component includes a ring guide component, an energy storage component, and a slag-vibrating component. The heat-measuring component is located on the upper wall of the base, the ring guide component is located on the inner wall of the base, the energy storage component is located on the upper wall of the ring guide component, and the slag-vibrating component is located on the side of the ring guide component away from the heat-measuring component.

[0008] As a further preferred embodiment of the present invention, the sealing assembly includes a hydraulic cylinder, a sealing frame, and a sealing plate. The hydraulic cylinder is rotatably mounted on the end of the support frame away from the base, and the sealing frame is rotatably mounted on the inner wall of the support frame above the hydraulic cylinder. The power end of the hydraulic cylinder is hinged to one end of the sealing frame, and the sealing plate is located on the side of the sealing frame away from the hydraulic cylinder. The heat preservation assembly includes a heating coil, a pad, and a residual heat port. The heating coil is located on the inner wall of the heating platform, the pad is located on the bottom wall of the heating platform, and the residual heat port is located on the bottom wall of the heating platform.

[0009] Preferably, the heat measurement component includes a groove, a heat measurement cylinder, a heat measurement copper rod, and a heat measurement spring. Multiple sets of the grooves are disposed on the upper wall of the base, with the grooves having open tops. The heat measurement cylinder is disposed on the bottom wall of the base below the grooves. The heat measurement copper rod passes through the base and is disposed inside the heat measurement cylinder. The heat measurement spring is disposed between the heat measurement copper rod and the bottom wall of the heat measurement cylinder, and the heat measurement spring is in a compressed state. The ring guide component includes a heat insulation sleeve, a ring guide copper frame, a heat-conducting copper pillar, and a heat insulation plate. The heat insulation sleeve is disposed outside the heat measurement copper rod. The ring guide copper frame is disposed inside the base. The heat-conducting copper pillar is disposed outside the heat insulation sleeve and slides on the inner wall of the groove, fitting snugly against the ring guide copper frame. The heat insulation plate is disposed on the upper wall of the heat-conducting copper pillar outside the heat insulation sleeve. The energy storage component includes a power supply... The system comprises a copper frame, an energy storage and insulation cylinder, and an electric valve. The energy supply copper frame is symmetrically arranged on the upper walls of both ends of the ring guide copper frame. Multiple sets of the energy storage and insulation cylinders are located at the end of the energy supply copper frame away from the heat-conducting copper column. The electric valve is located on the inner wall of the end of the energy storage and insulation cylinder away from the energy supply copper frame. The slag vibration assembly includes a slag vibration block, a slag vibration trough, an impact port, a vibration rod, and an impact spring. The slag vibration block is located on the side of the energy storage and insulation cylinder away from the energy supply copper frame. Multiple sets of the slag vibration trough are located on the side of the slag vibration block away from the energy storage and insulation cylinder. The slag vibration trough is open at one end. The impact port is located between the slag vibration trough and the energy storage and insulation cylinder. The vibration rod is slidably located inside the slag vibration trough. The impact spring is located between the bottom wall of the slag vibration trough and the vibration rod. The impact spring is in a compressed state. Multiple sets of vibration rods are of different lengths.

[0010] Specifically, the support frame is equipped with a controller on its side wall.

[0011] The controller is electrically connected to the hydraulic cylinder, heating coil, and electric valve respectively.

[0012] A method for using a smelting equipment for synthesizing ductile iron, comprising the following steps:

[0013] Step 1: The hydraulic cylinder's power end shortens and pulls the sealing frame. The sealing frame rotates around the top of the support frame and drives the sealing plates to move in opposite directions. The sealing plates are lifted upward, hoisting the molten iron ladle above the heating platform between the sealing plates. Then, the hoisting rope is lowered, allowing the molten iron ladle to slowly descend into the heating platform and fit against the upper wall of the pad. A spheroidizing agent is added into the molten iron ladle. Subsequently, the hydraulic cylinder's power end extends and pushes one end of the sealing frame upward. The sealing frame rotates around the top of the support frame and drives the sealing plates to descend. The sealing plates move relative to each other and close, fitting against the upper wall of the molten iron ladle to seal it. An exhaust port is pre-opened on the upper wall of the sealing plates to allow the gas generated by the reaction between the molten iron and the spheroidizing agent inside the ladle to escape.

[0014] Step 2: The heating coil is energized to generate a magnetic field, which is used to heat the molten iron ladle by magnetic induction. The ladle keeps the molten iron inside warm, and the electromagnetic force generated by the induction can stir the molten metal to ensure the uniformity of the composition and temperature of the molten iron.

[0015] Step 3: After the calorimetric copper rod is heated, it heats the air inside the calorimetric cylinder. The air inside the calorimetric cylinder expands and, under the elastic deformation of the calorimetric spring, pushes the calorimetric copper rod to extend to the upper wall of the base. The calorimetric copper rod, through the heat insulation sleeve, drives the heat-conducting copper column to extend outside the groove. The heat-conducting copper column, when heated, heats the energy-supplying copper frame, which in turn heats the air inside the energy storage and insulation cylinder. The electric valve is in the closed state. Under continuous heating, the internal energy of the air inside the energy storage and insulation cylinder gradually increases. When the electric valve opens, the high-pressure gas inside the energy storage and insulation cylinder is discharged through the electric valve. The gas pushes the vibrating rod through the impact port. Under the elastic deformation of the impact spring, the vibrating rod quickly extends and impacts the bottom wall of the sealing plate, removing the slag adhering to the surface of the sealing plate. After the pressure inside the energy storage and insulation cylinder is released, it retracts into the slag block under the restoring elasticity of the impact spring.

[0016] The beneficial effects achieved by this solution using the above structure are as follows:

[0017] Compared with existing technologies, this solution combines a ladle-type spheroidizing mechanism with a heat-sensitive slag-removing mechanism. Through the installation of a ladle sealing assembly, heat preservation assembly, heat measurement assembly, ring guide assembly, energy storage assembly, and slag-vibrating assembly, it can store the residual heat generated during the heat preservation process of the molten iron ladle. The collected heat energy is converted into mechanical energy to drive the vibrating rod to generate an outward impact force. The impact force acts on the surface of the ladle plate, thereby vibrating away the slag layer that splashes and adheres to the bottom wall of the ladle plate. This reduces the probability of the slag layer falling into the molten iron in subsequent processing and forming slag inclusion defects. It also prevents the slag layer from accumulating and forming a hard slag layer, thus reducing the labor intensity of workers and reducing the difficulty of cleaning. Gas pushes the vibrating rod through the impact port. Under the elastic deformation of the impact spring, the vibrating rod quickly extends to impact the bottom wall of the ladle plate and remove the molten slag adhering to the surface of the ladle plate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this solution;

[0019] Figure 2 This is the front perspective stereoscopic view of this solution;

[0020] Figure 3 This is a bottom-view perspective of the design.

[0021] Figure 4 This is a schematic diagram of the spheroidizing mechanism of the cover type in this scheme;

[0022] Figure 5 This is a schematic diagram of the combined structure of the base and heating platform in this solution;

[0023] Figure 6 This is the main view of this solution;

[0024] Figure 7 This is a side view of the design.

[0025] Figure 8 This is a top view of the plan;

[0026] Figure 9 for Figure 6 Sectional view of AA section;

[0027] Figure 10 for Figure 8 Sectional view of BB section;

[0028] Figure 11 for Figure 1 Enlarged structural view of section I;

[0029] Figure 12 for Figure 10 Enlarged structural view of Part II.

[0030] The components are as follows: 1. Base, 2. Heating platform, 3. Support frame, 4. Cover-type spheroidizing mechanism, 5. Sealing assembly, 6. Hydraulic cylinder, 7. Sealing frame, 8. Sealing plate, 9. Insulation assembly, 10. Heating coil, 11. Pad, 12. Waste heat port, 13. Heat-sensitive slag cleaning mechanism, 14. Heat measuring assembly, 15. Groove, 16. Heat measuring cylinder, 17. Heat measuring copper rod, 18. Heat measuring spring, 19. Ring guide assembly, 20. Insulation sleeve, 21. Ring guide copper frame, 22. Heat-conducting copper column, 23. Insulation plate, 24. Energy storage assembly, 25. Energy supply copper frame, 26. Energy storage and insulation cylinder, 27. Electric valve, 28. Slag vibration assembly, 29. Slag vibration block, 30. Slag vibration trough, 31. Impact port, 32. Vibration rod, 33. Impact spring, 34. Controller.

[0031] The accompanying drawings are provided to further understand the present solution and form part of the specification. They are used together with the embodiments of the present solution to explain the present solution and do not constitute a limitation thereof. Detailed Implementation

[0032] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this solution, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this solution without creative effort are within the scope of protection of this solution.

[0033] In the description of this solution, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this solution and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this solution.

[0034] like Figures 1-12 As shown, the present invention proposes a smelting equipment for synthesizing ductile iron, comprising a base 1, a heating platform 2, a support frame 3, a cover-type spheroidizing mechanism 4, and a heat-sensitive slag cleaning mechanism 13. The heating platform 2 is disposed on the upper wall of the base 1, the support frame 3 is symmetrically disposed on the upper walls of both ends of the base 1, the cover-type spheroidizing mechanism 4 is disposed on the support frame 3, and the heat-sensitive slag cleaning mechanism 13 is disposed on the base 1. The cover-type spheroidizing mechanism 4 includes a sealing assembly 5 and a heat-insulating assembly 9. The sealing assembly 5 is disposed at the end of the support frame 3 away from the base 1, and the heat-insulating assembly 9 is disposed on the inner wall of the heating platform 2. The heat-sensitive slag cleaning mechanism 13 includes a heat-measuring assembly 14, a ring guide assembly 19, an energy storage assembly 24, and a slag-vibrating assembly 28. The heat-measuring assembly 14 is disposed on the upper wall of the base 1, the ring guide assembly 19 is disposed on the inner wall of the base 1, the energy storage assembly 24 is disposed on the upper wall of the ring guide assembly 19, and the slag-vibrating assembly 28 is disposed on the side of the ring guide assembly 19 away from the heat-measuring assembly 14.

[0035] The sealing assembly 5 includes a hydraulic cylinder 6, a sealing frame 7, and a sealing plate 8. The hydraulic cylinder 6 is rotatably mounted on the end of the support frame 3 away from the base 1. The sealing frame 7 is rotatably mounted on the inner wall of the support frame 3 above the hydraulic cylinder 6. The power end of the hydraulic cylinder 6 is hinged to one end of the sealing frame 7. The sealing plate 8 is located on the side of the sealing frame 7 away from the hydraulic cylinder 6. The heat preservation assembly 9 includes a heating coil 10, a pad 11, and a residual heat port 12. The heating coil 10 is located on the inner wall of the heating platform 2. The pad 11 is located on the bottom wall of the heating platform 2. The residual heat port 12 is located on the bottom wall of the heating platform 2.

[0036] The heat measuring component 14 includes a groove 15, a heat measuring cylinder 16, a heat measuring copper rod 17, and a heat measuring spring 18. Multiple sets of the grooves 15 are disposed on the upper wall of the base 1, with the grooves 15 having an open top. The heat measuring cylinder 16 is disposed on the bottom wall of the base 1 below the grooves 15. The heat measuring copper rod 17 penetrates the base 1 and is disposed inside the heat measuring cylinder 16. The heat measuring spring 18 is disposed between the heat measuring copper rod 17 and the bottom wall of the heat measuring cylinder 16, and the heat measuring spring 18 is in a compressed state. The ring guide component 1... 9 includes a heat-insulating sleeve 20, a ring-shaped copper frame 21, a heat-conducting copper column 22, and a heat-insulating plate 23. The heat-insulating sleeve 20 is located outside the heat-measuring copper rod 17. The ring-shaped copper frame 21 is located inside the base 1. The heat-conducting copper column 22 is located outside the heat-insulating sleeve 20 and slides on the inner wall of the groove 15. The heat-conducting copper column 22 is in contact with the ring-shaped copper frame 21. The heat-insulating plate 23 is located on the upper wall of the heat-conducting copper column 22 outside the heat-insulating sleeve 20. The energy storage component 24 includes a power supply. The energy-supplying copper frame 25, the energy storage and heat-insulating cylinder 26, and the electric valve 27 are provided. The energy-supplying copper frame 25 is symmetrically arranged on the upper walls of both ends of the ring guide copper frame 21. Multiple sets of the energy storage and heat-insulating cylinders 26 are arranged at the end of the energy-supplying copper frame 25 away from the heat-conducting copper column 22. The electric valve 27 is located on the inner wall of the end of the energy storage and heat-insulating cylinder 26 away from the energy-supplying copper frame 25. The slag-vibrating assembly 28 includes a slag-vibrating block 29, a slag-vibrating groove 30, an impact port 31, a vibration rod 32, and an impact spring 33. The slag-vibrating block 29 is arranged on the energy storage and heat-insulating cylinder 26. The heat storage cylinder 26 is located on the side away from the power supply copper frame 25. Multiple sets of the vibrating slag troughs 30 are located on the side of the vibrating slag block 29 away from the energy storage and heat preservation cylinder 26. The vibrating slag troughs 30 are open at one end. The impact port 31 is located between the vibrating slag trough 30 and the energy storage and heat preservation cylinder 26. The vibrating rod 32 is slidably located inside the vibrating slag trough 30. The impact spring 33 is located between the bottom wall of the vibrating slag trough 30 and the vibrating rod 32. The impact spring 33 is in a compressed state. The multiple sets of vibrating rods 32 are of different lengths.

[0037] The support frame 3 has a controller 34 on its side wall.

[0038] The controller 34 is electrically connected to the hydraulic cylinder 6, the heating coil 10 and the electric valve 27 respectively.

[0039] A method for using a smelting equipment for synthesizing ductile iron, comprising the following steps:

[0040] Step 1: The power end of hydraulic cylinder 6 shortens and pulls the sealing frame 7. The sealing frame 7 rotates around the top of the support frame 3 and drives the sealing plate 8 to move in opposite directions. The sealing plate 8 is lifted upward, and the molten iron ladle is hoisted above the heating platform 2 between the sealing plates 8. Then the hoisting rope is lowered, so that the molten iron ladle slowly descends into the heating platform 2 and fits against the upper wall of the pad block 11. A spheroidizing agent is added into the molten iron ladle. Subsequently, the power end of hydraulic cylinder 6 extends and pushes one end of the sealing frame 7 upward. The sealing frame 7 rotates around the top of the support frame 3 and drives the sealing plate 8 to descend. The sealing plate 8 moves in opposite directions to close and fits against the upper wall of the molten iron ladle, sealing the molten iron ladle. An exhaust port is pre-opened on the upper wall of the sealing plate 8 to discharge the gas generated by the reaction between the molten iron and the spheroidizing agent inside the molten iron ladle.

[0041] Step 2: The heating coil 10 is energized to generate a magnetic field, which is used to heat the molten iron ladle by magnetic induction. The ladle keeps the molten iron inside warm, and the electromagnetic force generated by induction can stir the molten metal to ensure the uniformity of the composition and temperature of the molten iron.

[0042] Step 3: After being heated, the heat-measuring copper rod 17 heats the air inside the heat-measuring cylinder 16. The expansion of the air inside the heat-measuring cylinder 16, under the elastic deformation of the heat-measuring spring 18, pushes the heat-measuring copper rod 17 to extend to the upper wall of the base 1. The heat-measuring copper rod 17, through the heat-insulating sleeve 20, drives the heat-conducting copper column 22 to extend beyond the groove 15. The heat-conducting copper column 22, when heated, heats the energy-supplying copper frame 25. The energy-supplying copper frame 25 then heats the air inside the energy storage and insulation cylinder 26. The electric valve 27 is in the closed state, and the energy storage and insulation cylinder 26... 6. Under continuous heating, the internal energy of the air inside gradually increases. When the electric valve 27 is opened, the high-pressure gas inside the energy storage and insulation cylinder 26 is discharged through the electric valve 27. The gas pushes the vibrating rod 32 through the impact port 31. Under the elastic deformation of the impact spring 33, the vibrating rod 32 quickly extends to impact the bottom wall of the sealing plate 8, removing the slag adhering to the surface of the sealing plate 8. After the pressure inside the energy storage and insulation cylinder 26 is released, it retracts into the slag block 29 under the restoring elasticity of the impact spring 33.

[0043] In actual use, in the initial state, the sealing plate 8 is set in a mating position, and the non-contact parts of the ring guide copper frame 21, heat-conducting copper column 22 and power supply copper frame 25 are all coated with heat-insulating coating, and the electric valve 27 is in the closed state.

[0044] When spheroidizing treatment of molten iron is required, controller 34 controls hydraulic cylinder 6 to start, the power end of hydraulic cylinder 6 shortens and pulls sealing frame 7, sealing frame 7 rotates around the top of support frame 3 and drives sealing plate 8 to move in opposite directions, sealing plate 8 is lifted up, and molten iron ladle containing molten iron is hoisted to the heating platform 2 between sealing plates 8. Then the hoisting rope is lowered, so that molten iron ladle slowly descends into the heating platform 2 and fits against the upper wall of pad block 11. Spheroidizing agent is added into the molten iron ladle.

[0045] Subsequently, the controller 34 controls the power end of the hydraulic cylinder 6 to extend and push one end of the sealing frame 7 upward. The sealing frame 7 rotates around the top of the support frame 3 and drives the sealing plate 8 to descend. The sealing plate 8 moves relative to close and fits against the upper wall of the molten iron ladle to seal the molten iron ladle. An exhaust port is pre-opened on the upper wall of the sealing plate 8 for the gas generated by the reaction between the molten iron and the spheroidizing agent inside the molten iron ladle to be discharged.

[0046] The controller 34 controls the heating coil 10 to start. The heating coil 10 is energized to generate a magnetic field and uses magnetic induction to heat the molten iron ladle. The molten iron ladle keeps the molten iron inside warm. At the same time, the electromagnetic force generated by induction can stir the molten metal and ensure the uniformity of the composition and temperature of the molten iron.

[0047] The residual heat generated by the heated molten iron ladle heats the heat-measuring copper rod 17 through the residual heat port 12. After being heated, the heat-measuring copper rod 17 heats the air inside the heat-measuring cylinder 16. The air inside the heat-measuring cylinder 16 expands and, under the deformation elasticity of the heat-measuring spring 18, pushes the heat-measuring copper rod 17 to extend to the upper wall of the base 1. The heat-measuring copper rod 17 drives the heat-conducting copper column 22 to extend beyond the groove 15 through the heat insulation sleeve 20. The maximum elongation of the heat-measuring spring 18 limits the stroke of the heat-conducting copper column 22, preventing it from completely disengaging from the groove 15, thus playing a limiting role. The heat-conducting copper column 22 heats the energy-supplying copper frame 25, which in turn heats the air inside the energy storage and insulation cylinder 26. The electric valve 27 is in the closed state, and the internal energy of the air inside the energy storage and insulation cylinder 26 gradually increases under continuous heating.

[0048] After the molten iron inside the ladle undergoes spheroidization treatment, controller 34 de-energizes heating coil 10 to stop heating the ladle. Controller 34 also controls the hydraulic cylinder 6 to shorten its power end, causing the sealing frame 7 to lift the sealing plate 8 away from the upper wall of the ladle. Operators then use hoisting equipment to lift the ladle from inside the heating platform 2. Subsequently, controller 34 restarts hydraulic cylinder 6, extending its power end to its maximum stroke. The sealing frame 7 then aligns the inner wall of the sealing plate 8 with the vibrating rod 32. In the initial stage of ladle removal, the temperatures of the base 1, heating platform 2, and sealing plate 8 are high. To avoid damage from high temperatures... After a period of heat dissipation, when the sealing plate 8 still has residual heat but is no longer red-hot, slag is removed from it. After the heating of the molten iron ladle is lost, the heat measuring copper rod 17 gradually dissipates the heat inside the heat measuring cylinder 16. The internal temperature of the heat measuring cylinder 16 decreases, and the heat measuring copper rod 17 retracts into the heat measuring cylinder 16 under the return elasticity of the heat measuring spring 18. The heat measuring copper rod 17 drives the heat conducting copper column 22 to retract into the groove 15 through the heat insulation sleeve 20. The heat insulation plate 23 is attached to the upper wall of the base 1 to prevent the loss of heat inside the heat conducting copper column 22, so that the energy storage and heat preservation cylinder 26 maintains a high internal energy.

[0049] The controller 34 controls the electric valve 27 to open. When the electric valve 27 opens, the high-pressure gas inside the energy storage and insulation cylinder 26 is discharged through the electric valve 27. The gas pushes the vibrating rod 32 through the impact port 31. Under the elastic deformation of the impact spring 33, the vibrating rod 32 quickly extends to impact the bottom wall of the sealing plate 8, using vibration to dislodge the molten slag, thereby removing the molten slag adhering to the bottom wall of the sealing plate 8. After the pressure inside the energy storage and insulation cylinder 26 is released, the slag-vibrating block 29 and the vibrating rod 32 dissipate heat from the air inside the energy storage and insulation cylinder 26, causing the impact spring 33 to gradually return to its shortened state. Under the return elasticity of the impact spring 33, the vibrating rod 32 retracts into the slag-vibrating block 29. The above operation can be repeated for the next use.

[0050] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] The present solution and its implementation methods have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present solution; the actual structure is not limited to this. In conclusion, if a person skilled in the art, inspired by this description, designs a similar structure and embodiment without departing from the inventive intent of this solution, such design should fall within the protection scope of this solution.

Claims

1. A melting apparatus for synthesizing ductile cast iron, comprising a base, a heating table, and a support frame, characterized in that: It also includes a cover package type spheroidizing mechanism and a heat sensing type slag cleaning mechanism, a heating table is arranged on the upper wall of the base, support frames are symmetrically arranged on the upper walls of both ends of the base, the cover package type spheroidizing mechanism is arranged on the support frame, and the heat sensing type slag cleaning mechanism is arranged on the base. The cover package type spheroidizing mechanism includes a sealing package assembly and a heat preservation assembly, the sealing package assembly is arranged at one end of the support frame away from the base, and the heat preservation assembly is arranged on the inner wall of the heating table. The heat sensing type slag cleaning mechanism includes a heat sensing assembly, a ring guide assembly, an energy storage assembly and a slag vibrating assembly, the heat sensing assembly is arranged on the upper wall of the base, the ring guide assembly is arranged on the inner wall of the base, the energy storage assembly is arranged on the upper wall of the ring guide assembly, and the slag vibrating assembly is arranged on one side of the ring guide assembly away from the heat sensing assembly. The heat sensing assembly includes a groove, a heat sensing copper rod, a heat sensing cylinder and a heat sensing spring. A plurality of grooves are arranged on the upper wall of the base, the grooves are arranged with open upper ends, the heat sensing cylinder is arranged on the bottom wall of the base below the grooves, the heat sensing copper rod is arranged inside the heat sensing cylinder and penetrates through the base, and the heat sensing spring is arranged between the heat sensing copper rod and the bottom wall of the heat sensing cylinder. The ring guide assembly includes a heat insulation sleeve, a ring guide copper frame, a heat conducting copper column and a heat insulation plate. The heat insulation sleeve is arranged outside the heat sensing copper rod, the ring guide copper frame is arranged inside the base, the heat conducting copper column is arranged outside the heat insulation sleeve, the heat conducting copper column is slidingly arranged on the inner wall of the groove, the heat conducting copper column is attached to the ring guide copper frame, and the heat insulation plate is arranged on the upper wall of the heat conducting copper column outside the heat insulation sleeve.

2. A melting apparatus for synthesizing compacted graphite cast iron according to claim 1, characterized in that: The sealing package assembly includes a hydraulic cylinder, a sealing frame and a sealing plate, the hydraulic cylinder is rotationally arranged at one end of the support frame away from the base, the sealing frame is rotationally arranged on the inner wall of the support frame above the hydraulic cylinder, the power end of the hydraulic cylinder is hinged to one end of the sealing frame, and the sealing plate is arranged on one side of the sealing frame away from the hydraulic cylinder.

3. A melting installation for the synthesis of nodular cast iron according to claim 2, characterized in that: The heat preservation assembly includes a heating coil, a cushion block and a waste heat port, the heating coil is arranged on the inner wall of the heating table, the cushion block is arranged on the bottom wall of the heating table, and the waste heat port is arranged on the bottom wall of the heating table.

4. A melting apparatus for synthesizing compacted graphite cast iron according to claim 3, characterized in that: The energy storage assembly includes an energy supply copper frame, an energy storage heat preservation cylinder and an electric valve, the energy supply copper frame is symmetrically arranged on the upper walls of both ends of the ring guide copper frame, a plurality of energy storage heat preservation cylinders are arranged at one end of the energy supply copper frame away from the heat conducting copper column, and the electric valve is arranged on the inner wall of one end of the energy storage heat preservation cylinder away from the energy supply copper frame.

5. A melting installation for the synthesis of nodular cast iron according to claim 4, characterized in that: The slag vibrating assembly includes a slag vibrating block, a slag vibrating groove, an impact port, a vibrating rod and an impact spring, the slag vibrating block is arranged on one side of the energy storage heat preservation cylinder away from the energy supply copper frame, a plurality of slag vibrating grooves are arranged on one side of the slag vibrating block away from the energy storage heat preservation cylinder, the slag vibrating grooves are arranged with open one ends, the impact port is arranged between the slag vibrating groove and the energy storage heat preservation cylinder, the vibrating rod is slidingly arranged inside the slag vibrating groove, and the impact spring is arranged between the bottom wall of the slag vibrating groove and the vibrating rod.

6. A melting installation for the synthesis of nodular cast iron according to claim 5, characterized in that: The impact spring is in a compressed state, and a plurality of vibrating rods are arranged with different lengths.

7. A melting installation for the synthesis of nodular cast iron according to claim 6, characterized in that: The heat sensing spring is in a compressed state.

8. The use method of the melting equipment for synthesizing nodular cast iron according to claim 7, characterized in that: Step one: the power end of the hydraulic cylinder is shortened to pull the sealing frame, the sealing frame is rotated around the top of the support frame and drives the sealing plate to move away, the sealing frame is hoisted to the heating table above the sealing plate, then the hoisting rope is lowered, the ladle is slowly lowered to the inner part of the heating table and is attached to the upper wall of the cushion block, the sealing plate is closed by relative movement and is attached to the upper wall of the ladle, and the ladle is sealed. Step two: the magnetic field generated by the heating coil power supply uses the magnetic induction phenomenon to heat the ladle, and the ladle keeps the molten iron inside; Step three: the heated copper rod heats the air inside the heat measuring cylinder, and the air inside the heat measuring cylinder expands under the deformation elasticity of the heat measuring spring to push the heat measuring copper rod out to the upper wall of the base. The heat measuring copper rod drives the heat conducting copper column out of the groove through the heat insulation sleeve, and the heat conducting copper column heats the energy supply copper frame. The energy supply copper frame heats the air inside the energy storage heat preservation cylinder, and the internal energy of the air inside the energy storage heat preservation cylinder gradually increases under continuous heating; Step four: after the electric valve is opened, the gas with higher pressure in the energy storage heat preservation cylinder is discharged from the inside of the energy storage heat preservation cylinder through the electric valve. The gas pushes the vibration rod through the impact port, and the vibration rod quickly extends to the bottom wall of the impact sealing plate under the elastic deformation of the impact spring, thereby removing the adhered slag on the surface of the sealing plate.

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